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Articles BRX Do-More Counters Do-More Do-More Designer Inputs Outputs PLC PLC Basics PLC Learning Scan Timers

Timing Diagram NOT Just Used for a Timer

Logic circuits in a PLC ladder logic program are either on or off. The inputs change, which will affect the outputs. This can be expressed in a timing diagram. The timing diagram or chart will show you how the ladder logic program will respond to the changing states of the inputs and outputs.
Timing Diagram NOT Just Used for a Timer
This visual method is an excellent way of understanding how the PLC ladder logic functions. We will discuss a timing diagram and how it is used for timers, counters, and ladder logic. This will help in understanding or troubleshooting your PLC programs. Let’s get started.

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BRX Do-More Communication Do-More Do-More Designer EasyPLC EasyPLC Machine Simulator Modbus TCP PLC PLC Basics PLC Learning

EasyPLC Machining Center Loading Robots

The EasyPLC machining center loading robots will demonstrate sequencing and robot control using a PLC. Two input lines feed blanks to the robot. The robot will alternate taking the blanks and putting them into the CNC (Computer Numerical Control) machine. The robot moves the piece to the finished conveyor when the part has been machined. A three-axis robot loader will pick up the part and place this in a storage box on the roller conveyor.
EasyPLC Machining Center Loading RobotsUsing the five steps for PLC program development, we will discuss and show you how to program this EasyPLC machining center. This will involve all the ladder logic to load and unload using the robot simulator. This PLC simulator will show sequencing and drum instruction programming using timers and events. An Automation Direct BRX Do-More PLC is used for this application, but the general methods can be used for just about any PLC on the market. Let’s get started.

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BRX Do-More Communication Do-More Do-More Designer EasyPLC Machine Simulator Modbus TCP Modbus TCP PLC PLC Learning

EasyPLC Simulator Robotic Cell BRX Do-More PLC

The Machine Simulator (MS) is part of the EasyPLC software suite. It has many built-in machines that are used to show different programming techniques. The robotic cell example is one of these machines. This will demonstrate a sequencer example. In this case, an engine is lifted and placed onto a rack. The logic will step through various steps to perform the task.
EasyPLC Simulator Robotic Cell BRX Do-More PLCWe will be using a BRX Do-More PLC and the Do-More Designer programming software to program this EasyPLC machine simulator engine loader of the robotic cell. This will be done using Modbus TCP (Ethernet) for communications. The program will allow you to start, stop and jog the sequencer. Modifications of the EasyPLC Robotic Cell will include controls for this operation. Using the five steps for program development, we will show how this sequencer is programmed. Let’s get started.

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BRX Do-More Counters Do-More Do-More Designer PLC PLC Basics PLC Learning Timers

BRX Do-More PLC High-Speed Input Timer


The High-Speed discrete inputs can be configured to measure the amount of time between pulses. When you want a scaled value representing a speed or rate, the high-speed input timer is a better option for pulse rates below 5 kHz. This is compared to using the high-speed input pulse counting selection.
BRX Do-More PLC High-Speed Input TimerThe BRX Do-More series of programmable logic controllers have built-in high-speed inputs. These inputs can function in Counter, Timer, or Pulse Catch modes. Every CPU will have either 6 or 10 high-speed inputs (HSI) available depending on the model. These inputs can be used for input frequencies from 0 to 250Khz. 250Khz represents 250000 input counts per second that can be coming from devices connected to your PLC like an encoder. Due to the speed of the inputs, they function on the BRX Do-More PLC asynchronous with the PLC scan time.
We will continue looking at the high-speed inputs on our BRX Do-More PLC, by looking at the pulse timer mode. Previously we looked at the high-speed count mode of the PLC. We scaled the count to display RPM (Revolutions per Minute). Scaling the edge trigger timer from our incremental encoder, we will scale and compare the RPM from last time. Let’s get started.

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BRX Do-More Communication Digital Counter Do-More Do-More Designer EasyPLC Machine Simulator Modbus TCP PLC

Do-More PLC – EasyPLC Box Selection Program

The Machine Simulator (MS) is part of the EasyPLC software suite. It has many built-in machines that can be programmed. The box selection (camera management and distribution) is one of these machines. It will read barcodes from the boxes and send them to different exit ramps. The Do-More Designer PLC Simulator will be used to program this virtual machine.
Do-More PLC – EasyPLC Box Selection ProgramUsing the Do-More Designer PLC software, we will connect the simulator to the box selection machine. This will be done using Modbus TCP (Ethernet) for communications. Using the five steps for program development we will show how this is programmed. Let’s get started.

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Articles BRX Do-More Do-More Do-More Designer Number Systems PLC PLC Basics PLC Learning

Do-More Designer Element Browser


The element browser in the Do-More Designer software will display valid memory locations, add documentation, and show how to cast from one memory type to another.
Do-More Designer Element Browser
We will be discussing the element browser and how to take advantage of this in your Do-More program. Let’s get started.